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Spinlock save cpu flags

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This commit is contained in:
Kamil Kowalczyk
2026-03-12 22:48:34 +01:00
parent 19793e9126
commit 4760818118
50 changed files with 704 additions and 461 deletions
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18
kernel/device/partdrv.c
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@@ -7,7 +7,8 @@
#include <proc/reschedule.h>
#include <status.h>
bool partdrv_init (struct device* device, void* arg, struct proc* proc, struct reschedule_ctx* rctx) {
bool partdrv_init (struct device* device, void* arg, struct proc* proc,
struct reschedule_ctx* rctx) {
(void)proc, (void)rctx;
struct partdrv_init* init = arg;
@@ -36,6 +37,7 @@ void partdrv_fini (struct device* device, struct proc* proc, struct reschedule_c
int partdrv_read (struct device* device, struct proc* proc, struct reschedule_ctx* rctx, void* a1,
void* a2, void* a3, void* a4) {
(void)proc, (void)rctx, (void)a4;
uint64_t fs;
if (a1 == NULL || a2 == NULL || a3 == NULL)
return -ST_BAD_ADDRESS_SPACE;
@@ -47,9 +49,9 @@ int partdrv_read (struct device* device, struct proc* proc, struct reschedule_ct
size_t sector_count = *(size_t*)a2;
uint8_t* buffer = a3;
spin_lock (&super->lock);
spin_lock (&super->lock, &fs);
int ret = device_op (super, XDRV_READ, proc, rctx, &sector, &sector_count, buffer);
spin_unlock (&super->lock);
spin_unlock (&super->lock, fs);
return ret;
}
@@ -57,6 +59,7 @@ int partdrv_read (struct device* device, struct proc* proc, struct reschedule_ct
int partdrv_write (struct device* device, struct proc* proc, struct reschedule_ctx* rctx, void* a1,
void* a2, void* a3, void* a4) {
(void)proc, (void)rctx, (void)a4;
uint64_t fs;
if (a1 == NULL || a2 == NULL || a3 == NULL)
return -ST_BAD_ADDRESS_SPACE;
@@ -68,9 +71,9 @@ int partdrv_write (struct device* device, struct proc* proc, struct reschedule_c
size_t sector_count = *(size_t*)a2;
uint8_t* buffer = a3;
spin_lock (&super->lock);
spin_lock (&super->lock, &fs);
int ret = device_op (super, XDRV_WRITE, proc, rctx, &sector, &sector_count, buffer);
spin_unlock (&super->lock);
spin_unlock (&super->lock, fs);
return ret;
}
@@ -92,6 +95,7 @@ int partdrv_get_device_type (struct device* device, struct proc* proc, struct re
int partdrv_get_sector_size (struct device* device, struct proc* proc, struct reschedule_ctx* rctx,
void* a1, void* a2, void* a3, void* a4) {
(void)proc, (void)rctx, (void)a2, (void)a3, (void)a4;
uint64_t fs;
if (a1 == NULL)
return -ST_BAD_ADDRESS_SPACE;
@@ -100,9 +104,9 @@ int partdrv_get_sector_size (struct device* device, struct proc* proc, struct re
struct partdrv* partdrv = device->udata;
spin_lock (&partdrv->super->lock);
spin_lock (&partdrv->super->lock, &fs);
device_op (partdrv->super, XDRV_GET_SECTOR_SIZE, proc, rctx, secsize);
spin_unlock (&partdrv->super->lock);
spin_unlock (&partdrv->super->lock, fs);
return ST_OK;
}